#17007 Can’t connect to Server – Android

Closed Created by @Peter - 12 comments

From @Peter 13.01.2024, 07:53


I'm using Samsung Galaxy Tab S7 FE and trying to connect to Samsung phones. It generates the QR code ok, but when I scan the QR code on any device it just creates a text note, not a connection to a server. I have tried with old and new Samsung phones and ipads.



#1 From @smartrace 13.01.2024, 10:51 Owner

Hi Pete,

just to be sure: You need to scan the QR code using the free SmartRace Connect app, not your smartphone camera. Are you doing it like this?


#2 From @peter 14.01.2024, 04:39

Thanks for the prompt response.

Ok, so I put the connect app on my phones. I must have mis-read that instruction. Now when I scan the QR code using samsung S8, S9 or S23 I get an error stating "There was an error communicating with the server, please try again." When I try connecting with the Samsung S5 I het an error saying Smartrace connect has stopped and it closes the program.

#3 From @smartrace 14.01.2024, 14:21 Owner

Hi Peter,

okay, thanks for the clarification :-)

It sounds to me as if the devices where either not on the same wifi network or the network was configured to block direct communication between the devices. Could you please take a look here and see if any of this helps? https://www.smartrace.de/en/the-smartrace-manual/smartrace-connect-start-server/


#4 From @peter 15.01.2024, 09:55

Hi Marc,

All devices are on the same network and close to the router. I worked out the problem. In the router config the 2.4Ghz channel was set to auto. When I changed it to a defined channel they connectted. Presumably the devices were selected different channels when they connected to the wi-fi.


#5 From @smartrace 15.01.2024, 09:56 Owner

Great you figured it out Peter! Happy its working now. I'll add the thing about the channels to the help section of the website.

@smartrace closed this 15.01.2024, 09:56
@smartrace added the label Android 15.01.2024, 09:56
#6 From @peter 27.04.2024, 04:35

Hi Marc,

This problem has reoccurred. I have double checked my settings. All devices are on the same network. The network is on a defined channel (153). The error is Smartrace connect has stopped.



#7 From @smartrace 27.04.2024, 07:57 Owner

Hi Pete,

do you mean that SmartRace Connect crashes? Could you attach a screenshot of the error so I can take a look? Thanks!


#8 From @peter 28.04.2024, 09:28

HI Marc,

This is the error that I get one the phone that is scanning the QR code.

#9 From @smartrace 28.04.2024, 09:40 Owner

Hi Pete,

okay, I see, that's a real crash. That didn't happen before, did it? Did you change anything prior to this happening the first time? Did you try restarting your device?


#10 From @peter 28.04.2024, 10:06

This was one of my original problems, but it was because I had the channel select in the router set to auto, so I changed it to a fixed channel, then it worked ok. I haven't had time to use the software lately and waited to get a chromecast fitted on the TV to cast to. Once that was set up I wanted to set up some racing and this error started again. I have restarted both the tablet that is the server and the phone that is the driver station and I still get the error.

#11 From @smartrace 29.04.2024, 13:40 Owner

Strangely enough I don't  see the crash on my developer console. Can you share some more details what you do before the crash happens? Does it always happen at the same point?

#12 From @peter 05.05.2024, 04:52

I suspect this may be to do with the age of the devices being connected. A couple of old S5 Samsung phones won't connect. They are both running Android 6.0.1.

I have 2 Samsung S10's and they have both connected.

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